NGRX Tutorial - Auth Service

ngrx-example-auth-services.ts

// NGRX Complete Tutorial Without Pain (Angular6 / RxJS6)
// https://medium.com/@andrew.kao/ngrx-complete-tutorial-without-pain-angular6-rxjs6-5511b8cb8dac

import { Injectable } from '@angular/core';
import { of, Observable, throwError } from 'rxjs';
import { Authentication } from '(authentication model)';

@Injectable()
export class AuthService {
  constructor() {}

  login(data: Authentication): Observable<string> {

    // Do something you like to validate the credentials
    // Eg, Call the API -> subscribe -> check -> hanlde error ... etc
      if (!valid) {
   	    throwError('Invalid credentials');
      }
      
    // Pretending all good, return the username
    return of('Sun,Yat-Sen');
  }

}